Mcdowell, MRC., Edmunds, PW., Potvliege, RM., Joachain, CJ., Shingal, R., & Bransden, BH. (1984). The Angular-distribution of Asymmetry in Scattering of Spin-polarized Electrons By Spin-polarized Hydrogen-atoms .2. Journal of Physics B: Atomic, Molecular and Optical Physics, 17(19), 3951-3963. https://doi.org/10.1088/0022-3700/17/19/017 (Original work published 1984)